Oil burner



April 26, 1932- F. HvosLEF 1,855,187 OIL BURNER l Filed Dec. 27, 1928 2Sheefs-Shee(l l /N V5 NTO@ April 26, 1932.

F. HVOSLEF OIL BURNER Filed Deo. m2 /Sheets-S'heet 2 Patented Apnze,1932 UNITED STA rnnnnrx w. HvosLEr, or DEARBOBN, MICHIGAN, AssIGNon ToTHE TmirEN SILENT AUTOMATIC COMPANY, or Imfrnorr,l MICHIGAN, AConronA'rroN or mcHmAN vOIIII'IB URNER Myv .invention relates to oil.burners and has for its principal object a burner that is simple `andcompact in construction, that provides a thoroughly atomized fuel and any"bustion thereof, that regulates the flow of air so as to preventexcessive whirling and eddying thereof and that simply and effectivelytakes care of any leakage of oil from the atomizing pump. The inventionconi sistsprincipally in the oil burner, in the device for preventing'leakage of fuel from the atomizing pump and in the parts andcombinations and arrangements vof. parts hereinafter described andclaimed.

In the accompanying drawings,

Fig. 1 is a part side elevation, part sectional view of an oil vburnerembodying my invention,

Fig. 2 vis a top plan view,a portion'of the casing being broken away,and Fig. 3 is a cross-sectional View on the line 3 3 in Fig. 1. y

' A housingl has a nosing 2 secured tothe z5 front end thereof as byscrews 3.v Spac ed away from the rear end of the housing 1 by lugs 4 andsecured thereto as by screws 5 is an end wall member 6, two mounting-legs 7 being secured to said end wall member and a third 8 to saidnosing. Secured to said rear end of said housing 1 as by screws 9 andforced away therefrom by means of coil v springs 10 on said screws is acover plate 11.

By adjusting the distance of said cover plate 11 from the end of thehousing 1, the amount of air entering the housing may be regulated.

The interior 'of the housing 1 is provided with a plurality (six. beingthev preferred A number) of equiangularly spaced radial fins l2 thatextend lengthwise of the housing and support at their inner front endportions an annular member 13 having at its center a tubular bearingportion14 through which extends a shaft 15. The rear end portion 16 ofsaid tubular bearing member 14 itself constitutes the bearing for therear end of said shaft 15 and a suitable bushing 17 is provided for theforward endof said shaft 15. A packing 18 is provided for the bodyportion of said shaft and said bushing 17 has agroove 19 in its uppersurface that communicates` with a radial passageway 204 throughsaidannular memberVv 13, whereby 15 is a pump rotor 21, the pump body 22being.

mounted against the forward face of said annular member 13 and the pumpcover 23 being secured to said pump body 22. U T he pump cover 23 isprovided with a pro-v jectmg stem 24 that has a longitudinal bore ilubricant may 'be supplied for said packing adequate supply of air tosupport the com- 18. z l

Mounted on the forward end of said shaft 25 communicating with atransverse bore 26 in said cover which has a small longitudinal .bore 27at its end communicating with the interior of the pump body 22; so Ithatatomized fuel leaving the pump traverses a substantially Z-shaped path.The end ofsaid projecting stem 24Ais threadedv and a burner tip ornozzle 28 is screwed thereon. Secured to said projecting stem 24 as by aset screwv 29 is a conical shell 30 that projects beyond the end of thenozzle 28 and is provided with a plurality of 'slotted openings 31 aboutin line with the end ofv said nozzle. A spark plug. 32 for igniting fuelis secured to said nosing 2 and its points 33 project into the interiorthereof a little in front of saidconical-burner shield 30. T Rigidlymounted on said bearing member ,14 is the armature 34 of an electricmotor whose rotary field 35 is secured to a support j 36 that is mountedon the rear endv of said shaft 15, said rear end of said shaft and thebore of said support' being tapered sot-hat the two may be firmlvsecured together by means ofa nut 37 on the end of the shaft.

Secured to the field support 36 as by screws v38 are fan blad-es 39 thatforce `air through the housing and into the nosing. The outside diameterof said fan is slightly less than the inside diameter of said housingandthe fan is disposed adjacent to the rear ends of said fins 12. The airfrom the fan would normally have a whirling motion which would inter-- fere with combustion, but the radial fins prevent this whirling motion ofthe air and I cause it to flowstraight through the-housing 1 and nosing2. The conical shield 30 in which 2o 44 and by reason of the suction ofthe pump the nozzle is disposedprotects the flame from excessive Vaircurrents. c

Fuel oil is supplied to the atomizing pump by means of a' supply .lineincluding a mag` netic valve 40 of suitable constructionV and a feedpipe 41 that terminates in an opening in the pump body22 Air enters thepump the cross portv to communicate with said4 -groove'44. Thus if any-oil should vescape from the pump it would enter said groove wouldpassback through said air passageway 42 and said lcross port 43 into thebody of the pump.

iAny suitable electric' control set may be provided for the motor andfor the spark plug, the drawings showing diagrammatically a control box45 and a transformer box 46 n struction, the shortjmoto'r sha for thespark plug.

The above described oil burner has numerous advantages. The motor, fanand pump are all enclosed in a housing which j, protects them frominjury and from unnecessary tampering, the motor is cooled bythe passageof air thereover, the air fan andfuel'pump balance each other, thecompact arrangement makes for simplicity and inex ensive con-` teliminates the necessity for universal joints, leakage of, fuel oil fromthe pump is prevented by simple L and effective means and the burnerisvery quiet and iseconomical in operation. Ob-

viously numerous changes might be made.

' vwithout departing from the invention and I do not wish to be limitedto the precise construction shown. x

WhatIclaimis:l -1 1. An oil burner comprising a housing including anosing portion and having an air opening at, the rear end thereof, anannular mounting member disposed centrally of said housing, fins in saidhousing extendin lengthwise .thereof and supporting sai mounting member,a tubular bearing member extending lengthwise of the housing and supjported by-said annular'mounting member, a

' shaft extending through said bearing member,a pumprotor on the forwardendof said shaft, apump body secured to said mounting member, a pumpcoversecured to said body and having a fuel passageway opening into theinteriorof said pump body, a burner nozzle secured to said p umpcoverland commu nicating with said fuel passageway thereof, means 'forsupplying oil and air to the intelintensi' rior of said pump body, afanat the rear end of said shaft and a motor between said fan and pumpfor rotating said shaft.

2. An oil burner comprising ahousing including a 'nosing portion andhaving an air opening at the rear end thereof, an annular mountingmember disposed centrally of said housing, fins in said housingextending lengthwise thereof and supporting said.'

mounting member, a tubular bearing member extending lengthwise of thehousing and supported by said annular mounting member, a shaft extendingthrough saidbe'aring member, a pump rotor on the forward end of saidshaft, a pump body secured tosaid mounting member, a pump cover securedto said body Aand having a fifel passageway a burner nozzle secured tosaid pump cover, land communicating with said fuel passageopening. intothe interior of said pump body,

way thereof means for supplying oil and air v tothe interior of saidpump body, a fan at the rear. end of said shaft, a motor between saidfan and pump for rotating said shaft,

a conical shield-member mounted on said pump cover over said burnernozzle and proecting beyond said burner nozzle and means in said nosingbeyond the end of said conical shield member for igniting'fuel.

a 3. An oil burner comprising a housing including a nosing portion andhaving an air opening at the rearend thereof, an annular Y mountingmember disposed centrally of said housing, fins in said' housingextending Y lengthwise thereof, and supportingl said mounting member, atubular bearing mem-` ber extending lengthwise of the housing andsupportedby said annular mounting' mem-` ber, a shaft extending throughsaid bearing member, a pump rotor on the forward vend of said shaft, apump'body secured to said" mounting member, a pump cover secured to saidbody and having a fuel passageway opening intol the interior vof saidpump body, a burner nozzle secured to said pump cover and communicatingwith said'l fuel passageway thereof, -means for supplying oil and air tothe interior yofsaid pump body, a fan at the rear end of said shaft, al

motor'. between said fan and pump for rotating said shaft, a conicalshield member mounted on said pump cover'over said burner' nozzle andprojecting beyond said burner nozzle, said shield having holestherethrough about in line with the-forward ond of said burner nozzleand means inA said nosing bevond the end of saidconical `shield memberfor igniting fuel. I

4. lAn oil burner comprising a housing in cluding a nosing portion andhaving an/air opening at the rear end thereof, an annular mountingmember'disposed'centrally of said housing, a tubular bearing memberextending lengthwise of the housing.v and supportefdf o bysaid annularmounting member, la sha extending throughlsaid bearing membenal pumprotor on the forward end of said shaft,

avpump body secured to said mounting memr, a pump cover secured to saidbody and having a fuel passageway opening into the i interior ofsaidpump body, a burner nozzle secured to said pump coveranc'lcommunicating with said fuel passageway thereof, an oil. supplypipe opening into the interior of said pump body, said annular mountingmember having an airpassageway therethrough opening into the interior ofsaid! pump body, a fan at the rear end of saidshaft and amotor betweensaid fan and pump for rotating said shaft.

5. An oilburner comprising a housing including a. nosing portion'landhavingan air opening at the rear end thereof, a plurality of equianmember extending lengthwise of the housing and supportedV` by saidannular mounting member, a shaft extending through lsaid bearing member,a pump'rotor on the forward end of said shaft, a pump body secured toVsaid mounting member, a pump cover'secured to said body and having afuel passage- 'way opening into'the interior of saidpump body, a burnernozzle secured to said pump cover and communicating with said fuelpassagewayA thereof, separate oil and air passageways leading to saidpump body, a fan l at the rear end of saidv shaft, an electric mov torarmature fixed on said tubular bearing member, a rotary motor fieldmounted on a supportha-ying a beveled bore in which tits the taperedre'ar end portion of said shaft, a nut for securing said field supportto `said shaft and fan blades secured-to said field support.

Signed at Detroit', llfichgan", this 20thv day i of December, 1'928. A

FREDRI'K HVOSLEF.

larly spaced ns extending lengthwise o said housing, an annular mountingl 'member disposed centrally Iofv said housing and supported by saidfins, a tubular bearing

